JAVASCRIPT

call by value and call by reference in javascript

<script>
var a=5;
var b;
b = a
a = 3
console.log(a)
console.log(b)
</script>

js call by reference

var a = {};
var func = function(b) { // callee
  b.a = 1;
}
func(a); // caller
console.log(a.a); // 1